In situ study on medium-range order evolution during the polyamorphous phase transition in a Pd-Ni-P nanostructured glass  

作　　者：Shu Fu Sinan Liu Jiacheng Ge Junjie Wang Huiqiang Ying Shangshu Wu Mengyang Yan Li Zhu Yubin Ke Junhua Luan Yang Ren Xiaobing Zuo Zhenduo Wu Zhen Peng Chain-Tsuan Liu Xun-Li Wang Tao Feng Si Lan 

机构地区：[1]Herbert Gleiter Institute of Nanoscience,School of Materials Science and Engineering,Nanjing University of Science and Technology,Nanjing 210094,P.R.China [2]Department of Physics,City University of Hong Kong,83 Tat Chee Avenue,Kowloon,Hong Kong SAR,P.R.China [3]Spallation Neutron Source Science Center,Dongguan 523803,P.R.China [4]Department of Materials Science and Engineering,City University of Hong Kong,Hong Kong,P.R.China [5]X-ray Science Division,Argonne National Laboratory,Lemont,Illinois 60439,USA [6]Center of Neutron Scattering and Applied Physics,City University of Hong Kong Dongguan Research Institute,Dongguan 52300,P.R.China [7]School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,P.R.China [8]Center of Neutron Scattering,City University of Hong Kong Shenzhen Research Institute,8 Yuexing 1st Road,Shenzhen Hi-Tech Industrial Park,Shenzhen 518057,P.R.China

出　　处：《Journal of Materials Science & Technology》2022年第30期145-156,共12页材料科学技术（英文版）

基　　金：financially supported by the National Key R&D Program of China(No.2021YFB3802800);the National Natural Science Foundation of China(No.51871120);the Natural Science Foundation of Jiangsu Province(No.BK20200019);the Fundamental Research Funds for the Central Universities(Nos.30919011107;30920010004;30919011404);supports by Guangdong-Hong Kong-Macao Joint Laboratory for Neutron Scattering Science and Technology and Shenzhen Science and Technology Innovation Commission(No.JCYJ202000109105618137);support from Qing Lan project and the distinguished professor project of Jiangsu province;support by the Shenzhen Science and Technology Innovation Committee(No.JCYJ20170413140446951);the Ministry of Science and Technology of China(No.2016YFA0401501);supported by the US DOE Office of Science,Office of Basic Energy Sciences。

摘　　要：Engineering multiscale structural hierarchies in glassy alloys enable a broad spectrum of potential applications.Metallic glasses were born in hierarchical structures from atomic-to-nanometer scales.However,the frozen-in structures in traditional metallic glasses prepared by rapid quenching techniques are challenging to tailor.Here,we show that a PdNiPbulk nanostructured glass of polyamorphous interfacial structures was prepared by inert-gas condensation with a laser evaporation source,and its multiscale structures could be engineered.In-situ scattering experiment results reveal polyamorphous phase transitions occurred in the interfacial regions,which are accompanied by the evolution of medium-range order and the nanoscale heterogeneous structures during the condensation process of glassy nanoparticles under high pressure and the following heating process.Moreover,changes in the cluster connectivity resulting from repacking of the local ordering induced by pressure and temperature could be observed.The thermophysical and mechanical properties,including boson peaks,hardness,and elasticity modulus,could be changed as a function of heat-treatment parameters.Our findings would shed light on the synthesis of bulk nanostructured glassy alloys with tailorable thermodynamic and dynamical behavior as well as mechanical properties based on the understanding of metastability for polyamorphous interfacial phases.

关 键 词：Bulk nanostructured glasses Medium-range order Polyamorphous phase transition 

分 类 号：TG139.8[一般工业技术—材料科学与工程]